1
Air drawn in through the nose or mouth passes through the pharynx and larynx of the _______ ____________ ____.
2
Formed from the trachea, bronchial tree, and the lungs.
3
Pressure in the lungs is decreased by increasing the volume of the thoracic cavity; this is achieved by raising the ribcage using the _____________ ______________.
4
Each lung is protected by a double membrane called the ________ _________.
5
The walls of the thoracic cavity are lined by a superficial layer called the ________ ______.
6
The thin _______ ______ covers the lungs themselves.
7
Ensures that the lungs slide smoothly over the thoracic wall, reducing friction between the membranes.
8
The delivery of O2 to the lungs and the expulsion of CO2 and H2O out of the lungs.
9
Breathing out.
10
Breathing in.
